EAGE Student Webinar
EAGE Student Webinar on Taking the Seismic Temperature of a Glacier by Robert Ferguson
on 23 March 2023 at 16-17 PM CET
Student Webinar by Robert Ferguson
Taking the Seismic Temperature of a Glacier by Robert Ferguson
Our machine learning (ML) analysis of 27 days of IRIS geophone data acquired adjacent to the Mt. Meager glacier, BC in Canada reveal that of five 3C stations near the glacier they all probably have the dynamic range necessary to capture seismicity that we associate with ice fracturing. Verified by our ML process also, we think, is each station's orientation though some orientation ambiguity remains that we work now to resolve. The Mt. Meager site (proximal to geothermal reservoir) is well instrumented under the auspices of IRIS to record fluid flow seismicity at low-frequency, but we find approximately 15,000 broad-band signals that we associate with surface ice fracturing. Our interest in the 3C stations is to support our ice-event locations determined from a co-located distributed acoustic sensing (DAS) system. With locations confirmed (on-ice vs. on-ridge-rock) we expect a strong correspondence between ice events and temperature change local to the glacier.".